Improvement in rabbet planes



F. SMTH. Rabbet Planes. N0. 14310. Paten'ted September23,1873.

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l :murine UNITED lSTATES,

PATENT CFFICE. l

FRANCIS SMITH, OF BOSTON, ASSIGNOR TO JOHN SULLY, TRUSTEE, OF

DEIHAM, MASSACHUSETTS.

IMPROVEMENT IN RABBETPLANES.

Specification forming part of Letters Patent No. 143,101, datedSeptember 23, 1873; application filed May l28. 1873. i

To all whom it may concern:

Be it known that I, FRANCIS SMITH, of Boston, in the county of Suffolkand State of Massachusetts, have invented4 certain Improvements inRabbet-Planes, of which the following is a specification:

Figure 1 of the accompanying drawing is a horizontal section taken inline C D, and showinga top View of my improved plane. Fig. 2 is a sideview of my improved plane; and Fig. 3 is a transverse vertical sectiontaken in line A B, and showing an -end view of a portion of the plane.

The present invention relates to certain new and useful improvements inmetallic rabbetplanes, and has for its principal objects the productionof a durable and economical plane that is easily worked, and true andeffective in its operation; that may be used either right v or leftwithout varying the blade, as it is necessary to do in woodenrabbetplanes when slightly worn; and in which a blade block or wedge isconveniently and readily adjusted without disturbing the position oflthe blade. My improvements consist, mainly, in a metallic rabbetplanearranged, as will be more fully described hereafter, so as to admit ofthe insertion of a wedge or block and blade in the side of the frame orbar of a plane, and to secure the even, smooth, and close cutting of therabbet.

In the drawing, a represen ts a metallic plate forming the bottom of aplane, divided by a transversemouth, b, into two portions, which areconnected by a curved bar or gooseneck, c, on the rear portion of which,projecting horizontally from one side, are formed iianges d and e, oneabove and inclined toward the other at the front7 thus leaving awedge-like space between them, in which is inserted a blade,f, the upperportion of which is narrower than the wide bottom portion f being cutaway for some distance on one side of the upper part, so as to admit ofits side entrance. The blade f is formed with a top or reversed beveledge, k, and finds a seat on the top of the lower ange c, which isinclined at the proper angle to receive the blade, which is held by awedge `or block, g, that is inserted sidewise between it and the upperllange d. The plane is provided at the rear' with a suitable handle, h,connected with its bottom a.

Reference being had to the drawing, it will readily be seen that, by thearrangement above described, the blade j' and block g are adjustedbetween the flanges d e from the side of the plane much moreconveniently and readily than when, as usual, they are inserted in thetop of the plane and driven down; for in the latter case, after theblade is properly set, it is very often liable to be displaced by thedriving in of the wedge, and considerable trouble caused and time wastedin readjusting it.

In wooden rabbet-planes, the bottom edge of the frame running againstthe angle of the rabbet soon becomes worn and uneven, and

prevents the true and smooth cutting 0f the rabbet; but by myimprovement the edge, being of iron or other suitable metal, is notliable to be worn so as to interfere with the effective operation of theplane. Moreover, in a wooden rabbet-plane, a spur is necessarily made onits side, in front of the blade, so as to cut out the corner of therabbet and clear the way for the passage of the blade, so as to cut aclean shaving; but by the formation of the top or reversed bevel edge kin a rabbetplane, the side edge of the bevel answers the above purposeequally as well if not better thanthe spur, the use of which is, by myimprovement, therefore obviated.

Having thus tullydescribed my improvements, what I claim as myinvention, and desire to have secured to me by Letters Patent, 1s

The combination of the bar or goose-neck c, formed with flanges d @,andblock or wedge g, blade f, and plate a, all arranged substantially asherein set forth.

In testimony whereof I have signed my name to this specication in thepresence of two subscribing witnesses.

FRANCIS SMITH.

Witnesses:

CARROLL D. WRIGHT, SAML. M. BARTON.

